Abstract: A ratchet wrench includes a wrench head with a ratchet space and a hole which communicates with the ratchet space. The ratchet space accommodates a ratchet-pawl assembly. The hole accommodates a direction-switching device. The ratchet-pawl assembly includes a ratchet and first and second pawls. The first and second pawls have pawl teeth on the first side thereof, and recessed areas on the second side thereof. Both ends of the first and second pawls have arc portions. The first and second pawls form abutting portions with thicknesses at two ends of the first side thereof. The thickness of the abutting portions of the first pawl is greater than the thickness of the abutting portions of the second pawl. The direction-switching device includes a toggle member which has first and second beads respectively pushed by first and second springs so as to be engaged with the first and second recessed areas.

Abstract: A ratchet wrench includes a wrench head which accommodates a ratchet-pawl assembly and a direction-switching device. The ratchet-pawl assembly includes a ratchet, and first and second pawls. The first and second pawls have pawl teeth for being engaged with the ratchet teeth of the ratchet. A recessed area is formed on each first and second pawls and face away from the ratchet teeth. Each recessed area forms first and second recessed curve portions, and two recessed curve portions. The direction-switching device includes a toggle member and two cavities. Each cavity accommodates a bead and spring which pushes the bead to move in the recessed areas of the first and second pawls and push the pawl teeth with the ratchet teeth of the ratchet. The pawl teeth of the first and second pawls are respectively engage with corresponding tooth valleys and tooth tip sides of the ratchet teeth.

Abstract: A rotational tool locking device includes a handle, a drive head, a locking assembly, and an operating button. The drive head is pivotally mounted at one end of the handle, and the locking assembly is arranged between the handle and the drive head. The operating button is set on the handle and can control the locking assembly to be in a fixed or released state relative to the drive head. When in the released state, the drive head can be easily rotated relative to the handle to a specific angle, presenting different pitch positions.

Abstract: An open-end wrench includes a working head and a handle which is formed with the working head. The working head includes an open slot which is formed by multiple driving surfaces, and has an access opening. An arcuate groove is formed between adjacent driving surfaces. Each driving surface has a concave sharp recess that forms an angle less than 90 degrees. The sharp recess is located in the middle of the driving surface corresponding thereto for gripping corners of screws. When in use, even if the screw corners are extensively damaged, the angled sharp recesses can find a gripping point to assist in turning the screw.

Abstract: A ratchet wrench assembly includes a ratchet installed in a through hole of a head. The ratchet includes a through hole, an annular groove and a side opening. The through hole communicates with the annular groove via the side opening. One of two open ends of the through hole is a star-shaped opening with twelve points. Another one of the two open ends of the through hole is a hexagonal opening with six points. A C-clip is secured in the annular groove. A part of the C-clip located at the side opening is located inside the through hole. A working component has a hexagonal cross section and is inserted from the star-shaped opening end. When the working component matches with the hexagonal opening, it is movable through the through hole. When the working component is not matched with the hexagonal opening, the rod part cannot pass through the through hole.

Abstract: A single-inductor multiple-output DC-DC converter includes a first power switch controlled by a first power switch signal and a second power switch controlled by a second power switch signal, connected in series between a positive supply voltage and a negative supply voltage, and interconnected at an input node; a single inductor with a first end connected to the input node; a plurality of output switches, controlled by corresponding output switch signals, connected in parallel with first ends connected to a second end of the inductor, second ends of the output switches, acting as output nodes, providing corresponding output voltages respectively; and a dual mode charge controller coupled to receive an input voltage at the input node, to receive the output voltages, to receive a state flag, and configured to accordingly generate the first and second power switch signals and the output switch signals.

Abstract: A telescopic wrench includes an outer tube, an outer sleeve, and an inner rod. The first hole of the outer sleeve ring is fitted onto the outer tube, and the second hole of the outer sleeve provides peripheral contact with the rod section of the inner rod. The outer sleeve forms an external auxiliary fitting structure with the inner rod and outer tube. The telescopic wrench provides an improvement over known structures that are prone to loosening and noise during use. The telescopic wrench enhances the structural strength when subjected to operating forces.

Abstract: A single-inductor multiple-output DC-DC converter includes a first power switch controlled by a first power switch signal and a second power switch controlled by a second power switch signal, connected in series between a positive supply voltage and a negative supply voltage, and interconnected at an input node; a single inductor with a first end connected to the input node; a plurality of output switches, controlled by corresponding output switch signals, connected in parallel with first ends connected to a second end of the inductor, second ends of the output switches, acting as output nodes, providing corresponding output voltages respectively; and a dual mode charge controller coupled to receive an input voltage at the input node, to receive the output voltages, to receive a state flag, and configured to accordingly generate the first and second power switch signals and the output switch signals.

Abstract: A torque wrench includes a body portion which as a room and a working member is assembled in the room. The working member includes a rod and a working head protruding from the body portion. A torque sensor is connected to the rod of the working member. A release unit is located in the room of the body portion and movably connected to the rod of the working member. A torque setting unit is located in the room to apply a set torque to the release unit. A controller is connected to the torque wrench and electrically connected to the torque sensor and the torque setting unit. When a force applied to the working member exceeds the set torque, the torque setting unit drives the release unit, causing the working member to be free of force.

Abstract: A socket includes a first section and a second section. The first section is to be connected with a tool. The second section includes an outer face, and a mounting hole is axially defined through the second section and communicates through the first section. The mounting hole includes multiple recesses and multiple sides defined in the inner periphery thereof. The multiple recesses and the multiple sides are located alternatively with each other. Each recess includes a rounded corner formed radially in the inner portion thereof. A triangular groove is formed axially and centrally in each side. The angle between two insides of each groove is smaller than 90 degrees. A rusted or damaged bolt head is engaged with either the rounded corners or the grooves so as to be effectively rotated.

Abstract: An inverter-based comparator, powered between a first supply voltage and a second supply voltage being lower than the first supply voltage, includes a first inverter branch composed of at least one first P-type transistor and at least one first N-type transistor; and a second inverter branch composed of at least one second P-type transistor, at least one second N-type transistor and at least two tuning switches. The first inverter branch and the second inverter branch are configured to compare an input voltage with an internal trigger point, thereby generating a compare voltage at an interconnected node. One of the at least two tuning switches is controlled to isolate the first supply voltage and another is controlled to isolate the second supply voltage to compensate for trigger point shifting.

Abstract: A system is provided. The system includes: a semiconductor processing system comprising: a semiconductor processing apparatus configured to perform at least one semiconductor fabrication process; and a load port attached to the semiconductor processing apparatus and configured to load a wafer contained in a wafer container to the semiconductor processing apparatus; and a load port first aid platform in electrical communication with the load port, wherein the load port first aid platform controls the load port when the semiconductor processing apparatus malfunctions.

Abstract: The present invention provides a multi-segment bendable joint, comprising: a jointer, having a rod portion, a first ball head and a second ball head connected at two ends of the rod portion; a first connector, at opposite ends thereof, with a first connecting portion and a first joint slot for receiving the first ball head therein, respectively; and a second connector, at opposite ends thereof, with a second connecting portion and a second joint slot for receiving the second ball head therein, respectively. When one of the first and second connectors is linked to a wrench body and the other acts as a socket, two-segment bending between the socket and the wrench body is allowed, resulting in larger bending angle between the socket and the wrench body compared to conventional products.

Abstract: An inverter-based comparator includes an output stage circuit including a P-type output transistor and an N-type output transistor; a first inverter having a first transition voltage with an input node coupled to an input voltage and an output node generating a first inverted voltage and coupled to a gate of the N-type output transistor; and a second inverter having a second transition voltage with an input node coupled to the input voltage and an output node generating a second inverted voltage and coupled to a gate of the P-type output transistor. The first inverter and the second inverter each includes an inverter that includes a first inverter branch composed of at least one first P-type transistor and at least one first N-type transistor; and a second inverter branch composed of at least one second P-type transistor, at least one second N-type transistor and at least two tuning switches.

Abstract: A telescopic wrench includes an outer tube, an outer sleeve, and an inner rod. The first hole of the outer sleeve ring is fitted onto the outer tube, and the second hole of the outer sleeve provides peripheral contact with the rod section of the inner rod. The outer sleeve forms an external auxiliary fitting structure with the inner rod and outer tube. The telescopic wrench provides an improvement over known structures that are prone to loosening and noise during use. The telescopic wrench enhances the structural strength when subjected to operating forces.

Abstract: A wrench includes a function end having an extension portion extending therefrom. Two arms extend from the function end and toward a direction opposite to the extension portion. A space is formed between the two arms and the extension portion. An engaging portion is formed to the distal end of the extension portion for receiving a hand tool. A rotary head is pivotably located in the space of the function end by two bolts respectively extending through the two arms and connected to the rotary head. The rotary head includes an outer part and a control unit which is located in a through hole defined through the outer ring. The control unit includes a control part and a driving part respectively located on two opposite end of the rotary head. The control part is rotated to control the direction that the driving part rotates.

Abstract: An inverter-based comparator, powered between a first supply voltage and a second supply voltage being lower than the first supply voltage, includes a first inverter branch composed of at least one first P-type transistor and at least one first N-type transistor; and a second inverter branch composed of at least one second P-type transistor, at least one second N-type transistor and at least two tuning switches. The first inverter branch and the second inverter branch are configured to compare an input voltage with an internal trigger point, thereby generating a compare voltage at an interconnected node. One of the at least two tuning switches is controlled to isolate the first supply voltage and another is controlled to isolate the second supply voltage to compensate for trigger point shifting.

Abstract: A socket includes a first section and a second section. The first section is to be connected with a tool. The second section includes an outer face, and a mounting hole is axially defined through the second section and communicates through the first section. The mounting hole includes multiple recesses and multiple sides defined in the inner periphery thereof. The multiple recesses and the multiple sides are located alternatively with each other. Each recess includes a rounded corner formed radially in the inner portion thereof. A triangular groove is formed axially and centrally in each side. The angle between two insides of each groove is smaller than 90 degrees. A rusted or damaged bolt head is engaged with either the rounded corners or the grooves so as to be effectively rotated.

Abstract: A ratchet ring includes six first driving portions formed to the inner periphery of the ratchet ring. Each first driving portion includes a first driving face and a toothed face. A second driving portion is formed in each of the six first driving portions and includes two second driving faces which respectively extend from the first driving face and the toothed face. A first angle is formed between the two second driving faces. A third driving portion is formed in each of the six first driving portions and includes a recess located between the two second driving faces. A second angle is formed between two sides of the recess. A step is formed between the two second driving faces and the third driving portion. When a corner of an object is engaged between the two second driving faces, the step avoids the object from dropping from the ratchet ring.